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From "Ajay Jadhav (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17280) Add mechanism to control hbase cleaner behavior
Date Thu, 26 Jan 2017 16:53:24 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15840021#comment-15840021
] 

Ajay Jadhav commented on HBASE-17280:
-------------------------------------

Sure. I'll change the name.

The workload execution times are not fixed and the engineers wanted to have the capability
to call it from an automated script. This is why we provided them shell commands to control
the behavior. But yes, I agree that knowing the timings and configuring the system is far
better.


> Add mechanism to control hbase cleaner behavior
> -----------------------------------------------
>
>                 Key: HBASE-17280
>                 URL: https://issues.apache.org/jira/browse/HBASE-17280
>             Project: HBase
>          Issue Type: Improvement
>          Components: Client, hbase, shell
>    Affects Versions: 2.0.0, 1.2.0
>            Reporter: Ajay Jadhav
>            Priority: Minor
>             Fix For: 2.0.0, 1.2.0
>
>         Attachments: HBASE-17280.branch-1.2.patch, HBASE-17280.branch-2.0.patch, HBASE-17280.v1-branch-1.2.patch,
HBASE-17280.v2-branch-1.2.patch, HBASE-17280.v2-branch-2.patch
>
>
> Cleaner is used to get rid of archived HFiles and old WALs in HBase.
> In the case of heavy workload, cleaner can affect query performance by creating a lot
of connections to perform costly reads/ writes against underlying filesystem.
> This patch allows the user to control HBase cleaner behavior by providing shell commands
to enable/ disable and manually run it.



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